Closes Open Texture
Fills the interconnected voids at the top of compatible rubberized layers before dense PU materials are applied.
Sport Floor PU pore sealer · rubberized layers · running track & sports flooring
PU Pore Sealer for Rubberized Sports Flooring & Running Track Systems
Sport Floor manufactures PU Pore Sealer for compatible porous rubberized layers where the open texture must be closed before self-leveling polyurethane or other dense upper layers are installed.
A rubber-granule base contains interconnected voids. If a dense PU layer is applied directly onto that open structure, material can be lost into the pores, the surface may become uneven, and the following layer can be harder to control. PU Pore Sealer creates the transition between the resilient rubber base and the dense polyurethane layers above.
Sport Floor PU Pore Sealer is manufactured using German raw materials within the applicable formulation and is available for direct B2B supply and international export to running-track contractors, sports-flooring installers, distributors, importers and project buyers.
Sport Floor ManufacturedPart of the Sport Floor polyurethane sports-flooring product family.
German Raw MaterialsGerman raw materials are used within the applicable formulation.
System Transition LayerConnects porous rubber bases with dense compatible PU layers above.
Direct Global SupplyAvailable to contractors, distributors, importers and project buyers.
What is PU Pore Sealer?
The transition layer between open rubber texture and dense polyurethane
PU Pore Sealer is a polyurethane material used to fill and close the open pores of compatible rubberized or resilient sports-flooring layers. It is commonly specified before a dense self-leveling PU layer is installed.
Rubberized layers are intentionally porous. Their open structure helps create resilience, but that same structure is not the ideal direct receiving surface for every dense polyurethane product. The pore sealer creates a more closed, continuous interface so the next PU layer can be applied more predictably.
Sport Floor treats pore sealing as a defined system stage. It is not a substitute for the primer beneath the rubber base, and it is not a decorative top coat. Its job is specific: close the porous layer before the denser system above continues.
Closes open pores in compatible rubberized sports-flooring layers.
Prepares the resilient base for dense self-leveling or other compatible PU layers.
Helps control excessive penetration of upper PU material into the rubber base.
Supports a more uniform interface between resilient and dense layers.
Manufactured using German raw materials within the applicable formulation.
Available individually or within a complete Sport Floor material package.
Why pore sealing matters
Open pores can consume the next layer — the sealer creates control
Reduces Material Loss
Helps limit unnecessary penetration of self-leveling PU into the open rubber base, improving material efficiency.
Creates a Better Interface
Provides a more controlled receiving surface for the following polyurethane layer.
Supports Layer Uniformity
Helps the next dense PU layer form more evenly across the resilient base.
System Continuity
Bridges the change from an open resilient layer to a dense performance layer within the same system.
Protects the Build-Up
Helps avoid applying dense upper PU directly into a substrate structure it was not designed to fill.
Application over rubberized layers
Seal the pores — do not bury them under excess self-leveling PU
After the rubberized base has been installed and reaches the condition required by the selected system, PU Pore Sealer is applied across the surface using the approved method. The objective is to close the open texture rather than create the final wearing layer.
Coverage depends on the actual porosity, granule size, compaction and system design. A highly open base can demand more sealing material than a tighter, more compact layer. For this reason, project consumption should be based on current Sport Floor technical data and the actual system rather than a generic competitor figure.
After the sealer is ready, the compatible self-leveling, full-PU or other specified upper layer can be installed according to the complete build-up.
Seal the surface according to its real porosity
Granule size, compaction and open texture affect sealer demand. Use current Sport Floor technical data for the actual project.
System position
The pore sealer sits exactly where the system changes from porous to dense
In a typical compatible Sandwich or rubberized PU system, primer bonds the resilient base to the substrate. Rubber granules and PU binder create the elastic body. PU Pore Sealer then closes the top of that porous structure before dense polyurethane material is installed.
Above the pore sealer, the system may continue with PU Self-Leveling Compound, a Full PU layer, spray-applied material or another approved surface construction depending on the selected Sport Floor system.
This is why pore sealer belongs to the technical middle of the system rather than the beginning or the finish.
Typical applications
Where a pore sealer becomes a critical system step
Sandwich Running Tracks
Used between the resilient SBR/PU base and the dense polyurethane layers above in compatible Sandwich systems.
Rubberized PU Sports Flooring
Closes the porous rubberized base before self-leveling or dense upper polyurethane layers.
Wet-Pour + PU Systems
Relevant where a porous wet-pour or resilient rubber layer must receive a dense polyurethane coating above.
Outdoor PU Courts
Used in compatible resilient outdoor systems where a rubberized sub-floor is sealed before the upper PU surface.
Multi-Purpose Sports Floors
Supports seamless sports-flooring build-ups combining resilient rubber layers with dense upper polyurethane finishes.
Refurbishment Build-Ups
May be relevant where an approved refurbishment system uses a compatible porous resilient layer beneath new dense PU materials.
German raw-material advantage
System control built on German raw materials
Pore sealer is a hidden layer, but it controls how efficiently and consistently the dense PU system above is built. That makes formulation and compatibility important.
German Raw Materials
Sport Floor uses German raw materials within the applicable PU Pore Sealer formulation.
Complete-System Manufacturing
The pore sealer belongs to the same wider Sport Floor PU range as primers, binders, base layers, self-leveling PU and top coats.
Manufacturer + Installer + Exporter
Sport Floor manufactures its own PU sports-flooring materials, uses them in project activity and supplies them directly for international orders.
Pore sealer vs self-leveling PU
One closes the pores — the other creates the dense layer
| Selection point | PU Pore Sealer | PU Self-Leveling Compound |
|---|---|---|
| Primary function | Closes the open texture of a compatible porous rubberized layer. | Creates a smooth, dense polyurethane layer above the approved base. |
| Typical position | Directly above the porous resilient layer. | Above the pore-sealed or otherwise compatible intermediate layer. |
| Material behavior | Fills and seals pores. | Flows and forms a continuous dense PU layer. |
| Is it the final finish? | No. | Usually not; many systems still use a top coat above it. |
| Dedicated page | Current product | PU Self-Leveling Compound |
Pore sealer vs primer vs top coat
Three different layers — three different jobs
Primer
Creates the first compatible bonding interface between the prepared substrate and the flooring system above.
Pore Sealer
Closes the open texture of a rubberized/resilient layer before dense PU is installed.
Top Coat
Creates the final exposed functional finish of the compatible PU system.
Correct system sequence matters.
Primer should not be used as pore sealer, and pore sealer should not be treated as the final top coat.
Application workflow
Close the rubber structure before building the dense PU layers above
Confirm the System
Identify the exact Sandwich, rubberized PU, wet-pour or other approved build-up.
Inspect the Rubber Base
Check that the resilient layer is correctly installed, cured and ready to receive the sealer.
Assess Porosity
Review the open texture, granule size and compaction because these influence actual sealer demand.
Apply the Pore Sealer
Use the approved Sport Floor application method and current technical data for the supplied product.
Confirm Closed Surface
Proceed when the sealed layer meets the required system condition for receiving dense PU material.
Continue the PU Build-Up
Apply the compatible self-leveling, full-PU or other specified upper layer.
Technical product data
Specify PU Pore Sealer from current Sport Floor documentation
Consumption and application behavior depend strongly on rubber porosity, granule size and the actual product formulation. Do not copy another manufacturer’s values.
| Item | Sport Floor PU Pore Sealer | Buyer relevance |
|---|---|---|
| Product Category | Polyurethane pore sealer / filler for compatible porous sports-flooring layers. | Defines its role as the transition layer between porous rubber and dense PU. |
| Primary Function | Closes pores in compatible rubberized/resilient layers before dense upper PU layers. | Explains why the material is required in the system. |
| Raw Materials | German raw materials used within the applicable formulation. | Key Sport Floor material-quality differentiator. |
| Component Type | Confirm on the current Sport Floor TDS. | Determines preparation, mixing and application procedure. |
| Density | Confirm on the current Sport Floor TDS. | Useful for technical submittals and BOQ planning. |
| Viscosity / Consistency | Confirm on the current Sport Floor TDS. | Relevant to trowel application and pore filling behavior. |
| Consumption | Use current Sport Floor product data and actual base porosity. | Highly open surfaces can require more material. |
| Number of Passes / Layers | Follow current Sport Floor technical specification. | Depends on product and system requirements. |
| Working / Cure Time | Follow current Sport Floor TDS and site conditions. | Controls when the next PU layer can be installed. |
| Following Layer | Compatible self-leveling, dense PU or other system-specific upper layer. | Connects the sealer to the complete build-up. |
| Packaging | Confirmed in the current commercial offer. | Required for project, pallet and export planning. |
| Storage / Shelf Life | Follow current label and Sport Floor technical documents. | Important for distributors and international shipments. |
Need current documents?
Request the latest TDS, SDS, packing information and quotation at
info@sportfloor-m.com.
Common specification mistakes
Pore sealing is a small stage that can prevent large material and surface problems
Skipping the Sealer
Applying dense PU directly onto an open rubber base can increase material loss and make the surface harder to control.
Using Primer Instead
Primer and pore sealer perform different functions and should not be treated as interchangeable.
Guessing Consumption
Real consumption depends on granule size, compaction and the open texture of the installed base.
Leaving Open Voids
Incomplete sealing can allow the next dense layer to penetrate unevenly into the base.
Applying Too Much Material
Pore sealer should close the structure according to the system; it should not be mistaken for the next dense PU layer.
Mixing Unchecked Systems
The rubber base, sealer and following PU layer should be confirmed as compatible materials.
Manufacturer + supplier + exporter
Buy the sealer with the rubber base and PU layers around it
Sport Floor manufactures a broad polyurethane sports-flooring range so professional buyers can source the pore sealer together with compatible base, binder, self-leveling and finishing materials.
Running-Track Contractors
Pore sealer supply for compatible Sandwich and rubberized track systems.
Sports Flooring Installers
For seamless systems using a porous resilient layer beneath dense PU materials.
Distributors & Importers
Manufacturer-direct supply of coordinated PU system components for international markets.
Project Procurement
BOQ-based material packages covering base, sealer, self-leveling PU and finishing layers.
Request an accurate B2B quotation
Tell us what the pore sealer will be applied over before we calculate supply
Application
Running track, rubberized PU floor, wet-pour + PU system or another compatible use.
Total Area
Provide total square metres for commercial planning.
Base Layer
State SBR/PU, EPDM-based resilient layer or another specified porous base.
Granule Size
Provide the rubber granule size where known because it affects pore structure.
Selected System
Sandwich, Rubberized PU, Wet Pour or another approved Sport Floor build-up.
Following Layer
Tell us whether self-leveling PU, Full PU or another dense layer follows the sealer.
Destination
For export, provide country, city and preferred port or delivery point.
Documents
List TDS, SDS or consultant-submittal requirements.
Build the complete PU system
Continue from pore sealing to base layers, self-leveling PU and finished surfaces
PU Pore Sealer FAQ
Questions contractors and buyers ask before specification
What is PU Pore Sealer used for?
It is used to close the open pores of compatible rubberized or resilient sports-flooring layers before dense polyurethane layers are installed.
Why is pore sealer needed over an SBR rubber base?
An SBR/PU base has an open porous structure. Pore sealer closes that texture so the following self-leveling or dense PU layer can be applied more uniformly and with less unnecessary penetration.
Is PU Pore Sealer the same as primer?
No. Primer is used at the substrate interface. Pore sealer is used above a porous rubberized layer before dense upper PU materials.
Is it the same as PU Self-Leveling Compound?
No. Pore sealer closes pores. Self-leveling PU forms the smooth dense polyurethane layer above the sealed base.
Is it the final top coat?
No. PU Pore Sealer is an intermediate system layer, not the exposed final finish.
Is it used in Sandwich running tracks?
Yes. Pore sealing is a key intermediate stage in compatible Sandwich systems between the resilient SBR/PU base and the dense polyurethane surface layers.
Can it be used in rubberized PU sports floors?
Yes, where the selected system includes a porous rubberized base that must be sealed before dense PU is installed.
Does Sport Floor manufacture PU Pore Sealer?
Yes. It is part of the Sport Floor polyurethane sports-flooring product family for project supply, distribution and international export.
Does Sport Floor use German raw materials?
Yes. German raw materials are used within the applicable Sport Floor PU Pore Sealer formulation.
How much pore sealer do I need?
Consumption depends on the actual porosity, granule size, compaction and selected system. Use current Sport Floor product data rather than a generic competitor figure.
How many layers are required?
Follow the current Sport Floor TDS and selected system specification. The required application route is product- and project-specific.
Can Sport Floor supply the complete system?
Yes. Buyers can request compatible rubber granules, PU binder, rubberized base materials, pore sealer, self-leveling PU, top coats and line marking as a coordinated package.
Can Sport Floor export the product?
Yes. International contractors, distributors, importers and project buyers can request direct supply at info@sportfloor-m.com.
Can I request TDS and SDS?
Yes. Request the current technical documents at info@sportfloor-m.com and use the latest issued Sport Floor data for approval and installation.
Sport Floor PU manufacturer · German raw materials · global supply
Close the pores before the next PU layer starts consuming them.
Send the application, area, rubber base type, granule size, selected system, following layer and destination. Sport Floor can quote PU Pore Sealer individually or prepare a wider compatible running-track or polyurethane sports-flooring material package.